Edge shearing device and battery production system

Abstract

The invention provides an edge shearing device and a battery production system.The edge shearing device comprises a cutting mechanism, a moving mechanism and a positioning mechanism, the positioning mechanism is used for fixing a battery monomer, and the cutting mechanism is used for machining a notch in the edge of an insulating film, stretching out of a shell, in the battery monomer; the cutting mechanism is connected to the moving mechanism which can drive the cutting mechanism to be close to or away from the edge of the insulating film. In the structure, the moving mechanism can drive the cutting mechanism to be close to or far away from the edge of the insulating film of the battery monomer fixed by the positioning mechanism, so that the cutting mechanism can process the notch on the edge of the insulating film extending out of the shell, and the insulating film extending out of the shell can be segmented, can be smoothly bent and is not easy to warp; the insulating film can be stably adhered to the surface of the shell of the battery monomer, so that the insulating property of the battery monomer is stable, and the reliability of the battery monomer is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a trimming device and a battery production system. Background Art

[0002] Battery devices have the advantages of high specific energy and high power density, and are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric airplanes, electric ships, and electric tools.

[0003] As the application fields of battery devices continue to expand, how to improve the reliability of battery devices has attracted more and more attention from those skilled in the art. Summary of the invention

[0004] In view of the above problems, the present application provides a trimming device and a battery production system, wherein the trimming device can trim the insulating film of a battery cell so that the insulating film can be stably bonded to the outer shell of the battery cell, which is beneficial to improving the reliability of the battery cell.

[0005] In a first aspect, some embodiments of the present application provide a trimming device, which includes a cutting mechanism, a moving mechanism and a positioning mechanism, the positioning mechanism being used to fix the battery cell, and the cutting mechanism being used to process a notch on the edge of an insulating film extending out of the outer shell of the battery cell; the cutting mechanism is connected to the moving mechanism, and the moving mechanism can drive the cutting mechanism close to or away from the edge of the insulating film.

[0006] In the above structure, since the moving mechanism can drive the cutting mechanism to approach or move away from the edge of the insulating film of the battery cell fixed by the positioning mechanism, the cutting mechanism can process a notch on the edge of the insulating film extending out of the outer shell, so that the insulating film extending out of the outer shell can be segmented and can be bent smoothly without being easily warped, so that the insulating film can be stably adhered to the surface of the outer shell of the battery cell, which is beneficial to stabilizing the insulation performance of the battery cell and improving the reliability of the battery cell.

[0007] According to the trimming device provided in some embodiments of the present application, the moving mechanism includes a base, a bracket and a driver. The bracket is movably connected to the base along a first direction, the driver is fixed to the base, the output end of the driver is transmission-connected to the bracket, the cutting mechanism is connected to the bracket, and the bracket drives the cutting mechanism to move by moving relative to the base along the first direction.

[0008] According to the trimming device provided in some embodiments of the present application, the cutting mechanism includes a cutter and an adjustment component, and the cutter is adjustably connected to the bracket through the adjustment component. The cutter is adjustably connected to the bracket through the adjustment component, so that the position of the cutter relative to the bracket is adjustable, so that the position of the cutter processed on the insulating film can be adjusted by adjusting the position of the cutter relative to the bracket, which can not only adjust the position, depth, tilt angle, etc. of the formed cut, but also make the cutting mechanism adapt to battery cells of different shapes and sizes.

[0009] According to the trimming device provided in some embodiments of the present application, the adjustment assembly includes a first adjustment member and a second adjustment member, the cutter is movably connected to the second adjustment member along the second direction, the second adjustment member is movably connected to the first adjustment member along the third direction, the first adjustment member is fixed to the bracket, the first direction, the second direction and the third direction are perpendicular to each other, so that the cutter can move relative to the bracket in the second direction and the third direction.

[0010] According to the trimming device provided in some embodiments of the present application, the first adjusting member is a first slide rail extending along the third direction, the second adjusting member is a second slide rail extending along the second direction, the second slide rail is slidably connected to the first slide rail, and the cutter is slidably connected to the second slide rail. Since the first adjusting member is fixed to the bracket, through the above structure, the cutter can be smoothly adjusted relative to the bracket in the second direction and the third direction; the adjustment component also includes a first locking bolt and a second locking bolt, the cutter is locked with the second slide rail by the first locking bolt, and the second slide rail is locked with the first slide rail by the second locking bolt, so that the operator can lock or loosen the cutter on the second slide rail by screwing the first locking bolt, and the operator can lock or loosen the second slide rail on the first slide rail by screwing the second locking bolt.

[0011] According to the trimming device provided in some embodiments of the present application, the cutting mechanism also includes a limiting structure, which is connected to the adjusting assembly. Along the first direction, the limiting structure protrudes from the cutter, so that when the cutter approaches the battery cell, the limiting structure can contact the battery cell before the cutter and resist the battery cell, so that the depth of the notch cut by the cutter is limited.

[0012] According to the trimming device provided in some embodiments of the present application, the trimming device further includes a controller, which is electrically connected to the driver and the cutter. Under the control of the controller, the driver is activated, and the bracket is driven to drive the cutter to approach the edge of the battery cell where the insulating film extends out along the first direction. When the limiting structure abuts against the battery cell, the cutter reaches a suitable cutting position, and the driver alarms due to excessive output torque. After receiving the alarm signal, the controller controls the cutter to cut a notch at the edge of the battery cell where the insulating film extends out.

[0013] According to the trimming device provided in some embodiments of the present application, the cutter is configured as a pneumatic scissors or a laser cutter.

[0014] According to the trimming device provided in some embodiments of the present application, the cutter includes a telescopic cylinder and a cutter, and the cutter is connected to the output end of the telescopic cylinder. By connecting the cutter to the output end of the telescopic cylinder, the telescopic cylinder can drive the cutter to cut the insulating film when it is in motion, so as to form a notch on the insulating film.

[0015] According to the trimming device provided in some embodiments of the present application, the cutting mechanism also includes a supporting member, which is connected to the adjusting component and is used to support the edge of the insulating film, thereby reducing the possibility of bending of the insulating film during cutting and enabling the cutting of the insulating film to proceed smoothly.

[0016] According to the trimming device provided in some embodiments of the present application, the positioning mechanism includes a clamping assembly, the clamping assembly includes a first clamp and a second clamp arranged opposite to each other along a second direction, the first clamp and the second clamp are configured to be able to approach each other along the second direction to clamp the battery cell, and the second direction is perpendicular to the first direction. By configuring the first clamp and the second clamp to be able to approach each other along the second direction to clamp the battery cell, the battery cell can be clamped by the first clamp and the second clamp to achieve fixation.

[0017] According to the trimming device provided in some embodiments of the present application, the positioning mechanism further includes a carrier for placing the battery cell, and the first clamp and the second clamp are movably connected to the carrier along the second direction. By movably connecting the first clamp and the second clamp to the carrier along the second direction, the first clamp and the second clamp can be moved back and forth along the second direction to approach each other to clamp the battery cell.

[0018] According to the trimming device provided in some embodiments of the present application, the positioning mechanism further includes a position adjustment component, which includes a first pusher and a second pusher arranged relatively along a first direction, and the first pusher and the second pusher are configured to be able to push the battery monomer located on the carrier along the first direction. By arranging the first pusher and the second pusher relatively along the first direction, and configuring the first pusher and the second pusher to be able to push the battery monomer located on the carrier along the first direction, the battery monomer located on the carrier can be pushed by the first pusher and the second pusher to move in the first direction, which is convenient for adjusting the position of the battery monomer in the first direction, and for making the position of the battery monomer in a preset position, which is conducive to improving the consistency of the notch formed on the insulating film.

[0019] According to the trimming device provided in some embodiments of the present application, the first pusher and the second pusher are configured to be able to extend and retract along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. By configuring the first pusher and the second pusher to be able to extend and retract along the third direction, the first pusher and the second pusher can be extended to a preset height along the third direction so that the battery cell can be pushed at this height, and the first pusher and the second pusher can be retracted to the initial height along the third direction, thereby reducing the possibility of interference with the cutter.

[0020] According to the trimming device provided in some embodiments of the present application, the first pushing member includes a first pushing portion, a first pushing device and a first telescopic device, the first pushing portion is connected to the output end of the first pushing device, the output end of the first pushing device moves along a first direction, the first pushing device is connected to the output end of the first telescopic device, and the output end of the first telescopic device moves along a third direction; the second pushing member includes a second pushing portion, a second pushing device and a second telescopic device, the second pushing portion is connected to the output end of the second pushing device, the output end of the second pushing device moves along the second direction, the second pushing device is connected to the output end of the second telescopic device, and the output end of the second telescopic device moves along the third direction.

[0021] In a second aspect, some embodiments of the present application provide a battery production system, which includes a trimming device provided by any of the above-mentioned technical solutions, and the trimming device is used to process a notch on the edge of the insulating film extending out of the outer shell in the battery cell.

[0022] The technical solution provided by the embodiments of the present disclosure brings at least the following beneficial effects: The present application provides a trimming device, which includes a cutting mechanism, a moving mechanism and a positioning mechanism. The positioning mechanism is used to fix a battery cell, and the cutting mechanism is used to process a notch on the edge of the insulating film extending out of the outer shell of the battery cell; the cutting mechanism is connected to the moving mechanism, and the moving mechanism can drive the cutting mechanism to approach or move away from the edge of the insulating film. In the above structure, since the moving mechanism can drive the cutting mechanism to approach or move away from the edge of the insulating film of the battery cell fixed by the positioning mechanism, the cutting mechanism can process a notch on the edge of the insulating film extending out of the outer shell, so that the insulating film extending out of the outer shell can be segmented, can be smoothly bent without being easily warped, and can be stably adhered to the surface of the outer shell of the battery cell, which is conducive to stabilizing the insulation performance of the battery cell and improving the reliability of the battery cell.

[0023] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 A schematic structural diagram of a trimming device provided in some embodiments of the present application from one perspective; Figure 2 A schematic structural diagram of a trimming device from another perspective provided in some embodiments of the present application.

[0025] In the figure: 1. Positioning mechanism; 11. Clamping assembly; 111. First clamp; 112. Second clamp; 12. Carrying frame; 13. Positioning assembly; 131. First pusher; 1311. First pusher portion; 1312. First pusher; 1313. First telescopic device; 132. Second pusher; 1321. Second pusher portion; 1322. Second pusher; 1323. Second telescopic device; 2. Cutting mechanism; 21. Cutter; 22. Adjustment assembly; 221. First adjustment member; 222. Second adjustment member; 23. Limiting structure; 3. Moving mechanism; 31. Base; 32. Bracket; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0027] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0028] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0029] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0030] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0031] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Battery devices have advantages such as high specific energy and high power density, and are widely used in electronic devices and transportation tools, such as mobile phones, laptops, electric vehicles, electric airplanes, electric ships, and electric tools, etc. As the application fields of battery devices continue to expand, the reliability of battery devices has attracted more and more attention from technicians in this field.

[0033] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, in parallel or in mixed connection through a busbar.

[0034] Usually, the surface of the battery cell is coated with an insulating film, which is used to isolate the outer shell of the battery cell from external components. In the prior art, when the insulating film is coated on the surface of the battery cell, the edge of the insulating film will extend out of the outer shell. However, at the corner, since the insulating film is a connected integral structure, it will be wrinkled or overlapped after being bent, and the bonding surface of the insulating film will be covered. There are parts of the insulating film that cannot be bonded to the outer shell of the battery cell, and the corners are prone to warping, which not only affects the assembly of the battery cell to form a battery cell assembly, but also affects the insulation performance of the battery cell, which is not conducive to improving the reliability of the battery cell.

[0035] In order to make the insulating film stably adhere to the outer shell of the battery cell, which is beneficial to improving the reliability of the battery cell, some embodiments of the present application provide a trimming device capable of shearing the insulating film of the battery cell, the trimming device comprising a cutting mechanism, a moving mechanism and a positioning mechanism, the positioning mechanism is used to fix the battery cell, the cutting mechanism is used to process a notch on the edge of the insulating film extending out of the outer shell in the battery cell; the cutting mechanism is connected to the moving mechanism, and the moving mechanism can drive the cutting mechanism close to or away from the edge of the insulating film. In the above structure, since the moving mechanism can drive the cutting mechanism close to or away from the edge of the insulating film of the battery cell fixed by the positioning mechanism, the cutting mechanism can process a notch on the edge of the insulating film extending out of the outer shell, so that the insulating film extending out of the outer shell can be segmented, can be smoothly bent without being easily warped, and the insulating film can be stably adhered to the surface of the outer shell of the battery cell, which is beneficial to stabilizing the insulation performance of the battery cell and improving the reliability of the battery cell.

[0036] The trimming device described in the embodiment of the present application can be used not only to cut the insulating film of the battery cell, but also to cut other structures in the battery device.

[0037] The technical solutions of the trimming device and battery production system provided in the specific implementation manner of the present application are further described below.

[0038] The embodiment of the present application provides a trimming device, referring to Figure 1The trimming device includes a cutting mechanism 2, a moving mechanism 3 and a positioning mechanism 1. The positioning mechanism 1 is used to fix the battery cell, and the cutting mechanism 2 is used to process a notch on the edge of the insulating film extending out of the shell of the battery cell; the cutting mechanism 2 is connected to the moving mechanism 3, and the moving mechanism 3 can drive the cutting mechanism 2 to approach or move away from the edge of the insulating film. In the above structure, since the moving mechanism 3 can drive the cutting mechanism 2 to approach or move away from the edge of the insulating film of the battery cell fixed by the positioning mechanism 1, the cutting mechanism 2 can process a notch on the edge of the insulating film extending out of the shell, so that the insulating film extending out of the shell can be segmented, can be smoothly bent without being easy to warp, and the insulating film can be stably adhered to the surface of the shell of the battery cell, which is conducive to stabilizing the insulation performance of the battery cell and improving the reliability of the battery cell.

[0039] The positioning mechanism 1 may be a mechanism for fixing the battery cell to be processed, and is used to fix the battery cell when the trimming device cuts the insulating film, thereby reducing the movement of the battery cell and facilitating the notch to have a preset shape.

[0040] Exemplarily, the positioning mechanism 1 can fix the battery cell by clamping, or by locking the battery cell with a locking bolt. Those skilled in the art can select a fixing method for the battery cell according to actual conditions.

[0041] The cutting mechanism 2 may be a mechanism for cutting a notch on the insulating film. The cutting mechanism 2 processes a notch on the edge of the insulating film extending out of the shell in the battery cell, so that the edge of the insulating film extending out of the shell is divided into multiple sections, so that the insulating film extending out of the shell can be bonded to the surface of the shell of the battery cell in sections when it is bent toward the battery cell, reducing the existence of wrinkles and overlaps, and each section of the insulating film can be stably bonded to the outer surface of the shell of the battery cell, reducing the possibility of the insulating film warping at the corner.

[0042] The moving mechanism 3 may be a mechanism for driving the cutting mechanism 2 to move. By connecting the cutting mechanism 2 to the output end of the moving mechanism 3, the moving mechanism 3 can drive the cutting mechanism 2 to move, so that the cutting mechanism 2 can approach or move away from the edge of the insulating film, so that the cutting mechanism 2 can be moved to a suitable position, so as to cut a notch of a suitable size at the edge of the insulating film.

[0043] In the above structure, since the moving mechanism 3 can drive the cutting mechanism 2 to approach or move away from the edge of the insulating film of the battery cell fixed by the positioning mechanism 1, the cutting mechanism 2 can process a notch on the edge of the insulating film extending out of the outer shell, so that the insulating film extending out of the outer shell can be segmented and can be bent smoothly without warping, so that the insulating film can be stably adhered to the surface of the outer shell of the battery cell, which is beneficial to stabilizing the insulation performance of the battery cell and improving the reliability of the battery cell.

[0044] In some embodiments, the moving mechanism 3 includes a base 31, a bracket 32 ​​and a driver (not shown in the figure), the bracket 32 ​​is movably connected to the base 31 along the first direction X, the driver is fixed to the base 31, the output end of the driver is transmission-connected to the bracket 32, and the cutting mechanism 2 is connected to the bracket 32.

[0045] The seat body 31 may be a support part in the mobile mechanism 3, which is a non-moving part in the mobile mechanism 3 and can support other parts in the mobile mechanism 3. The bracket 32 ​​may be a frame structure in the mobile mechanism 3, which is a movable part in the mobile mechanism 3. The bracket 32 ​​drives the cutting mechanism 2 to move by moving relative to the seat body 31. The bracket 32 ​​is movably connected to the seat body 31 along the first direction X, which may mean that the bracket 32 ​​is connected to the seat body 31 and can move relative to the seat body 31 along the first direction X, so that the bracket 32 ​​can drive the cutting mechanism 2 to move along the first direction X.

[0046] The cutting mechanism 2 is connected to the bracket 32, which may mean that the cutting mechanism 2 is connected to the bracket 32 ​​by connecting bolts, connecting pins and other connecting parts, so that the bracket 32 ​​can drive the cutting mechanism 2 to move; or the cutting mechanism 2 is connected to the bracket 32 ​​by welding or bonding, so that the bracket 32 ​​can drive the cutting mechanism 2 to move.

[0047] The driver may be a device for driving the bracket 32 ​​to move. The driver is fixed to the base 31, and the output end of the driver is in driving connection with the bracket 32. The driver may be fixed to the base 31, and the output end of the driver is connected to the bracket 32, so as to apply a driving force to the bracket 32 ​​to drive the bracket 32 ​​to move.

[0048] Exemplarily, the driver may include a driving cylinder or a linear motor to drive the bracket 32 ​​to move back and forth along the first direction X.

[0049] In some embodiments of the present application, the drive may include a ball screw and a servo motor, the output end of the servo motor is connected to the screw of the ball screw, and the nut of the ball screw is connected to the bracket 32, so that the bracket 32 ​​can be driven by the servo motor to perform more accurate displacement.

[0050] In some embodiments, the cutting mechanism 2 includes a cutter 21 and an adjustment assembly 22 , and the cutter 21 is adjustably connected to the bracket 32 ​​via the adjustment assembly 22 .

[0051] The cutter 21 may be a device for directly cutting the insulating film, and is used to process a notch on the edge of the insulating film extending out of the housing. The adjustment component 22 may be a component for adjusting the position of the cutter 21 relative to the bracket 32. The cutter 21 is adjustably connected to the bracket 32 ​​through the adjustment component 22, so that the position of the cutter 21 relative to the bracket 32 ​​is adjustable, so that the position of the notch processed by the cutter 21 on the insulating film can be adjusted by adjusting the position of the cutter 21 relative to the bracket 32, which can not only adjust the position, depth, tilt angle, etc. of the notch formed, but also enable the cutting mechanism 2 to adapt to battery cells of different shapes and sizes.

[0052] Exemplarily, the cutter 21 can be adjusted within a range of 360° in a plane perpendicular to the first direction X through the adjustment component 22, which is beneficial to improving the adaptability of the cutting mechanism 2.

[0053] Exemplarily, the adjustment assembly 22 may include a universal joint, so that the cutter 21 can be conveniently adjusted through the adjustment assembly 22 .

[0054] In some embodiments, the adjustment assembly 22 includes a first adjustment member 221 and a second adjustment member 222, the cutter 21 is movably connected to the second adjustment member 222 along the second direction Y, the second adjustment member 222 is movably connected to the first adjustment member 221 along the third direction Z, the first adjustment member 221 is fixed to the bracket 32, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0055] The first adjusting member 221 and the second adjusting member 222 are both components of the adjusting assembly 22. The first adjusting member 221 may be fixed to the bracket 32 ​​by connecting bolts or connecting pins, or may be fixed to the bracket 32 ​​by welding or bonding. By fixing the first adjusting member 221 to the bracket 32, the second adjusting member 222 is movably connected to the first adjusting member 221 along the third direction Z, and the cutter 21 is movably connected to the second adjusting member 222 along the second direction Y, so that the cutter 21 can move relative to the bracket 32 ​​in the second direction Y and the third direction Z.

[0056] By arranging the first direction X, the second direction Y and the third direction Z to be perpendicular to each other, the position of the cutter 21 can be adjusted in three directions in space, so that the position of the cutter 21 can be adjusted flexibly.

[0057] Exemplarily, the second adjusting member 222 may be provided with a second sliding groove extending along the second direction Y, and the cutter 21 may be slidably connected to the second sliding groove via a slider; the first adjusting member 221 may be provided with a first sliding groove extending along the third direction Z, and the second adjusting member 222 may be slidably connected to the first sliding groove via a slider.

[0058] In some embodiments, the first adjustment member 221 is a first slide rail extending along a third direction Z, the second adjustment member 222 is a second slide rail extending along a second direction Y, the second slide rail is slidably connected to the first slide rail, and the cutter 21 is slidably connected to the second slide rail; the adjustment assembly 22 also includes a first locking bolt and a second locking bolt, the cutter 21 is locked to the second slide rail by the first locking bolt, and the second slide rail is locked to the first slide rail by the second locking bolt.

[0059] By setting the first adjusting member 221 as a first slide rail extending along the third direction Z, and making the second slide rail slidably connected to the first slide rail, the second slide rail can slide smoothly relative to the first slide rail along the third direction Z; by setting the second adjusting member 222 as a second slide rail extending along the second direction Y, and making the cutter 21 slidably connected to the second slide rail, the cutter 21 can slide smoothly relative to the second slide rail along the second direction Y. Since the first adjusting member 221 is fixed to the bracket 32, through the above structure, the cutter 21 can be smoothly adjusted relative to the bracket 32 ​​in the second direction Y and the third direction Z.

[0060] The first locking bolt can be a device for locking the cutter 21 on the second slide rail. The cutter 21 is locked with the second slide rail by the first locking bolt, so that the operator can lock or loosen the cutter 21 on the second slide rail by screwing the first locking bolt.

[0061] The second locking bolt can be a device for locking the second slide rail on the first slide rail. The second slide rail is locked with the first slide rail by the second locking bolt, so that the operator can lock or loosen the second slide rail on the first slide rail by screwing the second locking bolt.

[0062] In some embodiments, the cutting mechanism 2 further includes a limiting structure 23 , which is connected to the adjusting assembly 22 , and along the first direction X, the limiting structure 23 protrudes from the cutter 21 .

[0063] The limiting structure 23 can be a structure for limiting the distance of the cutter 21 from the edge of the insulating film. It can not only reduce the possibility of the cutter 21 damaging the battery cell due to being too close to the battery cell, but also limit the depth of the notch formed by the cutter 21 on the insulating film, thereby facilitating the control of the depth of the notch formed on the insulating film.

[0064] By connecting the limiting structure 23 to the adjusting assembly 22, the limiting structure 23 moves synchronously with the bracket 32 ​​and the cutter 21. By making the limiting structure 23 protrude from the cutter 21 along the first direction X, the limiting structure 23 can contact the battery monomer before the cutter 21 and abut against the battery monomer when the cutter 21 approaches the battery monomer, so that the depth of the notch cut by the cutter 21 is limited.

[0065] Exemplarily, the depth of the notch formed on the insulating film by the cutter 21 can be adjusted by adjusting the dimension of the limiting structure 23 protruding from the cutter 21 along the first direction X.

[0066] In some embodiments, the trimming device further includes a controller (not shown in the figure), which is electrically connected to the driver and the cutter 21 .

[0067] The controller can be used to control the action of the cutter 21. The controller controls the action of the cutter 21 so that the cutter 21 cuts a notch on the edge of the insulating film. The controller can also be used to control the action of the driver. It can control the action of the driver so that the cutter 21 moves along the first direction X.

[0068] In some embodiments, the controller can be a centralized or distributed controller. For example, the controller can be a single single-chip microcomputer or a plurality of distributed single-chip microcomputers. The single-chip microcomputer can run a control program to control the driver and cutter 21 to realize their functions.

[0069] The process of the trimming device processing a notch on the insulating film can be as follows: under the control of the controller, the driver is activated, the bracket 32 ​​is driven to drive the cutter 21 along the first direction X close to the edge of the battery cell extending out of the insulating film, when the limiting structure 23 abuts against the battery cell, the cutter 21 reaches a suitable shearing position, the driver alarms due to excessive output torque, and after receiving the alarm signal, the controller controls the cutter 21 to cut a notch at the edge of the insulating film extending out of the battery cell.

[0070] By setting the dimension of the limiting structure 23 protruding from the cutter 21 along the first direction X to A, the depth of the notch formed by the cutter is B, and the height of the insulating film extending from the edge of the battery cell along the first direction X is C, B=CA.

[0071] In some embodiments, the dimension of the limiting structure 23 protruding from the cutter 21 along the first direction X may be 2 mm, 1.5 mm or 2.5 mm.

[0072] In some embodiments, the cutter 21 is configured as a pneumatic scissors or a laser cutter.

[0073] By configuring the cutter 21 as a pneumatic scissors, the cutter 21 can smoothly cut the edge of the insulating film extending out of the battery cell along the first direction X to form a notch, so that it is not easy to bend due to low hardness during the cutting process. By configuring the cutter 21 as a laser cutter 21, it is beneficial to improve the quality of the notch cut by the cutter 21.

[0074] In some embodiments, the cutter 21 includes a telescopic cylinder and a cutting knife, and the cutting knife is connected to the output end of the telescopic cylinder.

[0075] The telescopic cylinder may be a device whose output end can be telescopic along the first direction X. The cutter may be a tool for cutting the insulating film, and by connecting the cutter to the output end of the telescopic cylinder, the telescopic cylinder can drive the cutter to cut the insulating film when it is in motion, so as to form a notch on the insulating film.

[0076] In some embodiments, the cutting mechanism 2 further includes a supporting member (not shown in the figure), which is connected to the adjusting component 22 and is used to support the edge of the insulating film.

[0077] The supporting member may be a device for supporting the edge of the insulating film extending out of the battery cell along the first direction X, which is used to reduce the possibility of bending of the insulating film during cutting, so that the cutting of the insulating film can be carried out smoothly.

[0078] By connecting the support member to the adjusting assembly 22, the support member can move synchronously with the adjusting assembly 22, so that when the cutter 21 approaches the edge of the insulating film extending out of the housing of the battery cell, the support member can synchronously approach the insulating film.

[0079] Exemplarily, the supporting member may be a clamping claw that supports the insulating film by clamping the insulating film; the supporting member may be a supporting rod that props up the insulating film by expanding from the inside to the outside, so that the insulating film is not easily collapsed or bent when being cut.

[0080] In some embodiments, the positioning mechanism 1 includes a clamping assembly 11, which includes a first clamp 111 and a second clamp 112 arranged relatively to each other along a second direction Y. The first clamp 111 and the second clamp 112 are configured to be able to approach each other along the second direction Y to clamp the battery cell, and the second direction Y is perpendicular to the first direction X.

[0081] The clamping assembly 11 may be an assembly that fixes the battery cell by clamping the battery cell. The first clamp 111 and the second clamp 112 are two components in the clamping assembly 11 that can approach each other to clamp the battery cell. By configuring the first clamp 111 and the second clamp 112 to be able to approach each other along the second direction Y to clamp the battery cell, the battery cell can be clamped by the first clamp 111 and the second clamp 112 to achieve fixation.

[0082] By arranging the second direction Y perpendicular to the first direction X, the first clamp 111 and the second clamp 112 clamp the battery cell from both sides of the direction perpendicular to the moving direction of the cutter 21 , thereby reducing the possibility of interference between the first clamp 111 and the second clamp 112 and the cutter 21 .

[0083] In some embodiments, the positioning mechanism 1 further includes a carrier 12 for placing the battery cells, and the first clamp 111 and the second clamp 112 are movably connected to the carrier 12 along the second direction Y.

[0084] The support frame 12 may be a frame for supporting a battery cell. When fixing the battery cell, the battery cell may be placed on the support member first, so that the support frame 12 supports the battery cell.

[0085] By movably connecting the first clamp 111 and the second clamp 112 to the carrier 12 along the second direction Y, the first clamp 111 and the second clamp 112 can move back and forth along the second direction Y to approach each other to clamp the battery cell.

[0086] In some embodiments, the positioning mechanism 1 further includes a positioning assembly 13, which includes a first pusher 131 and a second pusher 132 arranged relatively along a first direction X. The first pusher 131 and the second pusher 132 are configured to push the battery cell located on the carrier 12 along the first direction X.

[0087] The position adjustment component 13 may be a component for adjusting the position of the battery cell on the carrier 12. The first pusher 131 and the second pusher 132 may be components for pushing the battery cell. By arranging the first pusher 131 and the second pusher 132 relatively along the first direction X, and configuring the first pusher 131 and the second pusher 132 to be able to push the battery cell on the carrier 12 along the first direction X, the battery cell on the carrier 12 can be pushed by the first pusher 131 and the second pusher 132 to move in the first direction X, so as to facilitate the adjustment of the position of the battery cell in the first direction X, and facilitate the position of the battery cell to be at a preset position, which is conducive to improving the consistency of the notch formed on the insulating film.

[0088] In some embodiments, the first pushing member 131 and the second pushing member 132 are configured to be able to extend and retract along a third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0089] By configuring the first pushing member 131 and the second pushing member 132 to be able to extend and retract along the third direction Z, the first pushing member 131 and the second pushing member 132 can be extended to a preset height along the third direction Z so that the battery cell can be pushed at this height, and the first pushing member 131 and the second pushing member 132 can be retracted to an initial height along the third direction Z, thereby reducing the possibility of interference with the cutter 21.

[0090] In some embodiments, reference Figure 2 The first pushing member 131 includes a first pushing portion 1311, a first pushing device 1312 and a first telescopic device 1313. The first pushing portion 1311 is connected to the output end of the first pushing device 1312, and the output end of the first pushing device 1312 moves along the first direction X. The first pushing device 1312 is connected to the output end of the first telescopic device 1313, and the output end of the first telescopic device 1313 moves along the third direction Z. The second pushing member 132 includes a second pushing portion 1321, a second pushing device 1322 and a second telescopic device 1323. The second pushing portion 1321 is connected to the output end of the second pushing device 1322, and the output end of the second pushing device 1322 moves along the second direction Y. The second pushing device 1322 is connected to the output end of the second telescopic device 1323, and the output end of the second telescopic device 1323 moves along the third direction Z.

[0091] The first pushing portion 1311 may be a component in the first pushing member 131 used for direct contact with the battery cell, the first pusher 1312 may be a device in the first pushing member 131 used for driving the first pushing portion 1311 to move along the first direction X, and the first telescoping device 1313 may be a device in the first pushing member 131 used for driving the first pushing portion 1311 to telescope along the third direction Z.

[0092] By connecting the first pushing part 1311 to the output end of the first pusher 1312, the output end of the first pusher 1312 moves along the first direction X, the first pusher 1312 is connected to the output end of the first telescopic device 1313, and the output end of the first telescopic device 1313 moves along the third direction Z, the first pushing part 1311 can move in the first direction X and can telescope in the third direction Z.

[0093] The second pushing portion 1321 may be a component in the second pushing member 132 used for direct contact with the battery cell, the second pusher 1322 may be a device in the second pushing member 132 used for driving the second pushing portion 1321 to move along the first direction X, and the second telescoping device 1323 may be a device in the second pushing member 132 used for driving the second pushing portion 1321 to telescope along the third direction Z.

[0094] By connecting the second pushing part 1321 to the output end of the second pusher 1322, the output end of the second pusher 1322 moves along the second direction Y, the second pusher 1322 is connected to the output end of the second telescopic device 1323, and the output end of the second telescopic device 1323 moves along the third direction Z, the second pushing part 1321 can move in the first direction X and can be telescoped in the third direction Z.

[0095] Some embodiments of the present application also provide a battery production system, which includes a trimming device provided by any of the above technical solutions, and the trimming device is used to process a notch on the edge of the insulating film extending out of the outer shell in the battery cell.

[0096] The embodiment of the present application provides a trimming device. Referring to the figure, the trimming device includes a positioning mechanism 1, a cutting mechanism 2 and a moving mechanism 3. The battery cell is placed on the carrier 12 of the positioning mechanism 1 and adjusted to a preset position by the positioning assembly 13. After reaching the preset position, the clamping assembly 11 can clamp and position the battery cell. The bracket 32 ​​in the moving mechanism 3 is connected to the seat 31 along the first direction X. The position of the cutter 21 in the cutting mechanism 2 is adjustable by the adjusting assembly 22. The adjusting assembly 22 is also provided with a limiting structure 23 protruding from the cutter 21 along the first direction X. The cutter 21 is used to process a notch on the edge of the insulating film extending out of the shell of the battery cell. The bracket 32 ​​can drive the cutter 21 to approach or move away from the edge of the insulating film.

[0097] In the above structure, since the moving mechanism 3 can drive the cutting mechanism 2 to approach or move away from the edge of the insulating film of the battery cell fixed by the positioning mechanism 1, the cutting mechanism 2 can process a notch on the edge of the insulating film extending out of the outer shell, so that the insulating film extending out of the outer shell can be segmented and can be bent smoothly without warping, so that the insulating film can be stably adhered to the surface of the outer shell of the battery cell, which is beneficial to stabilizing the insulation performance of the battery cell and improving the reliability of the battery cell.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A trimming device, characterized in that: include: A positioning mechanism, used to fix the battery cell, the positioning mechanism comprising a clamping assembly, the clamping assembly comprising a first clamp and a second clamp arranged opposite to each other along a second direction, the first clamp and the second clamp being configured to be able to approach each other along the second direction to clamp the battery cell; A cutting mechanism, used for processing a notch on the edge of the insulating film extending out of the outer shell in the battery cell; A moving mechanism, wherein the cutting mechanism is connected to the moving mechanism, and the moving mechanism can drive the cutting mechanism to approach or move away from the edge of the insulating film. The moving mechanism comprises a base, a bracket and a driver, and the bracket is movably connected to the base along a first direction, and the first direction is perpendicular to the second direction. The driver is fixed to the base, and the output end of the driver is drivingly connected to the bracket, and the cutting mechanism is connected to the bracket.

2. The trimming device according to claim 1, characterized in that: The cutting mechanism comprises a cutter and an adjusting assembly, and the cutter is adjustably connected to the bracket through the adjusting assembly.

3. The trimming device according to claim 2, characterized in that: The adjustment assembly includes a first adjustment member and a second adjustment member, the cutter is movably connected to the second adjustment member along a second direction, the second adjustment member is movably connected to the first adjustment member along a third direction, the first adjustment member is fixed to the bracket, and the first direction, the second direction and the third direction are perpendicular to each other.

4. The trimming device according to claim 3, characterized in that: The first adjusting member is a first slide rail extending along the third direction, the second adjusting member is a second slide rail extending along the second direction, the second slide rail is slidably connected to the first slide rail, and the cutter is slidably connected to the second slide rail; the adjusting assembly also includes a first locking bolt and a second locking bolt, the cutter is locked to the second slide rail by the first locking bolt, and the second slide rail is locked to the first slide rail by the second locking bolt.

5. The trimming device according to claim 2, characterized in that: The cutting mechanism further comprises a limiting structure, wherein the limiting structure is connected to the adjusting assembly, and along the first direction, the limiting structure protrudes from the cutter.

6. The trimming device according to claim 2, characterized in that: The trimming device further comprises a controller, which is electrically connected to the driver and the cutter.

7. The trimming device according to claim 2, characterized in that: The cutter is configured as a pneumatic scissors or a laser cutter.

8. The trimming device according to claim 2, characterized in that: The cutter comprises a telescopic cylinder and a cutting knife, and the cutting knife is connected to the output end of the telescopic cylinder.

9. The trimming device according to claim 2, characterized in that: The cutting mechanism further comprises a supporting member, which is connected to the adjusting component and is used for supporting the edge of the insulating film.

10. The trimming device according to claim 1, characterized in that: The positioning mechanism further includes a carrier for placing the battery cell, and the first clamp and the second clamp are movably connected to the carrier along the second direction.

11. The trimming device according to claim 10, characterized in that: The positioning mechanism further includes a positioning assembly, which includes a first pushing member and a second pushing member disposed opposite to each other along the first direction, wherein the first pushing member and the second pushing member are configured to push the battery cell on the carrier along the first direction.

12. The trimming device according to claim 11, characterized in that: The first pushing member and the second pushing member are configured to be able to extend and retract along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

13. The trimming device according to claim 12, characterized in that: The first pushing member includes a first pushing portion, a first pusher and a first retractor, the first pushing portion is connected to the output end of the first pusher, the output end of the first pusher moves along the first direction, the first pusher is connected to the output end of the first retractor, the output end of the first retractor moves along the third direction; The second pushing member includes a second pushing portion, a second pusher and a second telescopic device, the second pushing portion is connected to the output end of the second pusher, the output end of the second pusher moves along the second direction, the second pusher is connected to the output end of the second telescopic device, and the output end of the second telescopic device moves along the third direction.

14. A battery production system, characterized in that: It comprises a trimming device as described in any one of claims 1 to 13, wherein the trimming device is used to process a notch on the edge of the insulating film extending out of the shell in the battery cell.

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